C13223313311212111133133313331333133313231323133211111313231221   >>    C1322331331121211113313331333133313331323132313321111131323122   <<    C13223313311212111133133313331333133313231323133211111313231223   >>      C13223313311212111133133313331333133313231323133211111313231222   >>